Home / 3,893.04-5,370.78-2,399.40

Finding the Fourth Proportional to 3,893.04, 5,370.78 and 2,399.40

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Solution

The fourth proportional to 3,893.04, 5,370.78 and 2,399.40 is: 3,310.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,893.04 : 5,370.78 = 2,399.40 : x
  2. Step 2: Convert to fraction form
    3,893.04/5,370.78 = 2,399.40/x
  3. Step 3: Cross multiply
    3,893.04x = 5,370.78 × 2,399.40
  4. Step 4: Simplify right side
    3,893.04x = 12,886,649.53
  5. Step 5: Solve for x
    x = 12,886,649.53/3,893.04
  6. Step 6: Final answer
    x = 3,310.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.